214711389 has 18 divisors (see below), whose sum is σ = 321187230. Its totient is φ = 138052656.

The previous prime is 214711373. The next prime is 214711423. The reversal of 214711389 is 983117412.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 185096025 + 29615364 = 13605^2 + 5442^2 .

It is not a de Polignac number, because 214711389 - 2⁴ = 214711373 is a prime.

It is a super-2 number, since 2×214711389² = 92201961132618642, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (214711319) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 236274 + ... + 237180.

It is an arithmetic number, because the mean of its divisors is an integer number (17843735).

Almost surely, 2^214711389 is an apocalyptic number.

214711389 is a gapful number since it is divisible by the number (29) formed by its first and last digit.

It is an amenable number.

214711389 is a deficient number, since it is larger than the sum of its proper divisors (106475841).

214711389 is an frugal number, since it uses more digits than its factorization.

214711389 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1849 (or 939 counting only the distinct ones).

The product of its digits is 12096, while the sum is 36.

The square root of 214711389 is about 14653.0334402130. The cubic root of 214711389 is about 598.8044610600.

The spelling of 214711389 in words is "two hundred fourteen million, seven hundred eleven thousand, three hundred eighty-nine".